A drawing by Pietro da Cortona for an overdoor in St. Peter's

Identifies a highly finished drawing (Vienna, Albertina) by Pietro da Cortona as a presentation drawing associated with a commission the artist received in 1628 to paint large murals in the arched spaces over the doors in the navi piccole at S. Peter's, Rome. The drawing depicts the Calling of SS. Peter and Andrew, and may be dated to 1634-1635. ;